Sundar, a Sith Lord of Human descent and male gender, existed on Korriban in the era known as the Cold War. During the course of this conflict, Sundar betrayed the Sith Empire and established a stronghold within the Tomb of Tulak Hord, situated in the Valley of the Dark Lords. Ultimately, a Sith from the Sith Academy vanquished him and his adherents, retrieving his signet ring to verify his death.